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9/2/2020 <br /> <br />32 13 13 CONCRETE PAVING Page 11 of 12 <br />3.10 FIELD QUALITY CONTROL <br />A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections. <br />B. Testing Services: Testing and inspecting of composite samples of fresh concrete obtained <br />according to ASTM C 172/C 172M shall be performed according to the following requirements: <br />1. Testing Frequency: Obtain at least one composite sample for each 100 cu. yd. or fraction <br />thereof of each concrete mixture placed each day. <br />a. When frequency of testing will provide fewer than five compressive-strength tests <br />for each concrete mixture, testing shall be conducted from at least five randomly <br />selected batches or from each batch if fewer than five are used. <br />2. Testing Location: Testing shall be done at the point of placement, unless concrete is <br />transported to the point of placement by a pump or travels greater than 50’ to the point of <br />placement by any other transportation device (e.g. will barrel, bobcat …). If the concrete <br />is transported greater than 50 feet from the concrete truck or is being pumped, testing shall <br />be done at the point of placement and at the concrete truck. <br />C. Strength of each concrete mixture will be satisfactory if average of any three consecutive <br />compressive-strength tests equals or exceeds specified compressive strength and no compressive- <br />strength test value falls below specified compressive strength by more than 500 psi. <br />D. Test results shall be reported in writing to Engineer, concrete manufacturer, and Contractor within <br />48 hours of testing. Reports of compressive-strength tests shall contain Project identification <br />name and number, date of concrete placement, name of concrete testing and inspecting agency, <br />location of concrete batch in Work, design compressive strength at 28 days, concrete mixture <br />proportions and materials, compressive breaking strength, and type of break for both 7- and 28- <br />day tests. <br />E. Nondestructive Testing: Impact hammer, sonoscope, or other nondestructive device may be <br />permitted by Architect but will not be used as sole basis for approval or rejection of concrete. <br />F. Additional Tests: Testing and inspecting agency shall make additional tests of concrete when test <br />results indicate that slump, air entrainment, compressive strengths, or other requirements have <br />not been met, as directed by Engineer. <br />G. Concrete paving will be considered defective if it does not pass tests and inspections. <br />H. Additional testing and inspecting, at Contractor's expense, will be performed to determine <br />compliance of replaced or additional work with specified requirements. <br />I. Prepare test and inspection reports. <br />3.11 REPAIR AND PROTECTION <br />A. Remove and replace concrete paving that is broken, damaged, or defective or that does not comply <br />with requirements in this Section. Remove work in complete sections from joint to joint unless <br />otherwise approved by Architect. <br />DocuSign Envelope ID: 7D9ACD4F-8F6C-42B6-9ADB-C60032DB6D03